METHOD AND APPARATUS FOR CRYOSURGERY

摘要

The present invention pertains to an apparatus for cryosurgery. The apparatus comprises a cryo-needle (1) having a diameter less than 3.2 mm. The apparatus is also comprised of a thermal insulation shell (5) disposed about a portion of the cryo-needle for reduction of heat transfer from surrounding tissues, or freezing prevention of surrounding tissues during application of the cryoneedle with the shell. The cryo-needle and shell are configured for insertion into a body of a patient. The present invention pertains to a method for freezing tissues. The method comprises the steps of bringing into contact a cryo-needle having a diameter of less than 3.2 mm with a patient's body. Next, there is the step of flowing the cryo-fluid through the cryo-needle.